Hey all,
I have this problem and I cannot for the life of me figure out what I'm doing wrong that the homework isn't accepting my answer. Can someone take a look at what I'm doing and maybe tell me whats wrong? Problem is below:
A rectangular tank is
wide and
deep. If the tank is only half full with water, find the force against one end of the tank.
(Recall that
=
.)
F = ______wN
Pressure on Strip: (6-y)w
Area of Strip: 13dy
Force against strip: (6-y)*13dy = 13w(6-y)dy
F = Integral from 0-3 {13w(6-y)dy}
13w(6y-y^2/2)dy
13w(18-9/2)
13(27/2) =
351/2
I've tried entering my answer in as a decimal and as the exact answer and for some reason its telling me it is incorrect. Any help would be great.